Also check those exchange smtp queues. If it is compromised accounts the spammers can send spam via you owa faster than your exchange server can process so it will get backed up so disabling accounts or changing passwords wont stop it until the queues are emptied.
-----Original Message----- From: Osborne, Richard [mailto:richard.osbo...@wth.org] Sent: Monday, August 02, 2010 3:32 PM To: NT System Admin Issues Subject: RE: malware that creates Outlook rules I'm glad I'm not the only sufferer! I'll try and answer the other questions that were asked: 1) yes, the spam continued even with the user's account disabled and their PC powered off 2) yes, only our Exchange server can send SMTP to the Internet 3) my OWA servers are clean according to VIPRE & MalwareBytes So far this has hit 3 users (out of ~5000). I have not seen any spam sent in the last 5 hours but I don't have any confidence that I have found the source. Maybe there's a PC with a high-privileged account that has been compromised and is sending out spam runs on a schedule? Currently I am getting up-to-date on patches on all my Exchange boxes. -----Original Message----- From: Thomas Mullins [mailto:tsmull...@wise.k12.va.us] Sent: Monday, August 02, 2010 2:17 PM To: NT System Admin Issues Subject: RE: malware that creates Outlook rules We are having a similar issue. We changed the users password, and since that user is in a meeting, we turned his machine off. Looks like it has to be coming from OWA. Here is some info from an error message our external MTA sent to me (our Exchange guys are looking into the matter): Transcript of session follows. Out: 220 mail3.wise.k12.va.us ESMTP In: EHLO mail.wise.k12.va.us Out: 250-mail3.wise.k12.va.us Out: 250-PIPELINING Out: 250-SIZE 800000000 Out: 250-VRFY Out: 250-ETRN Out: 250-ENHANCEDSTATUSCODES Out: 250-8BITMIME Out: 250 DSN In: MAIL FROM:<jev...@wise.k12.va.us> SIZE=1163 Out: 250 2.1.0 Ok In: RCPT TO:<fox2...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<khale...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<aboshw...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<abdul...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<bm...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<saltm...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<aarr1...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<se...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<sanad1...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<kham1...@naseej.com> Out: 250 2.1.5 Ok In: RCPT TO:<adi...@naseej.com> Out: 250 2.1.5 Ok Shane -----Original Message----- From: Roger Wright [mailto:rhw...@gmail.com] Sent: Monday, August 02, 2010 2:35 PM To: NT System Admin Issues Subject: Re: malware that creates Outlook rules Is your firewall set to only allow SMTP (port 25) traffic from your Exchange server? Die dulci fruere! Roger Wright ___ On Mon, Aug 2, 2010 at 2:21 PM, Osborne, Richard <richard.osbo...@wth.org> wrote: > I disabled their accounts and it didn't help. > > > -----Original Message----- > From: Roger Wright [mailto:rhw...@gmail.com] > Sent: Monday, August 02, 2010 1:09 PM > To: NT System Admin Issues > Subject: Re: malware that creates Outlook rules > > Have you had the users change their passwords yet? > > > Die dulci fruere! > > Roger Wright > ___ > > > > > On Mon, Aug 2, 2010 at 1:46 PM, Osborne, Richard > <richard.osbo...@wth.org> wrote: >> Has anyone seen malware that creates an Outlook rule that moves all >> new mail to Deleted Items and then sends out a bunch of spam? I have >> a few users that have been hit with something I can't find. I >> scanned the PCs with VIPRE, MalwareBytes, & Symantec's online scanner >> and didn't find anything. Then I turned off the PCs and something is >> still accessing their mailboxes. I scanned the Exchange server also. >> I am not seeing anything in Exchange User Monitor or Windows Security >> logs and our network guys say they don't see any unusual traffic to >> our Exchange server. >> >> Google finds a couple of people reporting the same thing but no >> resolution. >> >> Windows XP SP2 clients with Outlook 2002 & 2003; Exchange Server 2003 >> SP2 on Server 2003 SP1. >> >> Thanks for any ideas. >> >> >> >> Richard Osborne >> Information Systems >> Jackson-Madison County General Hospital >> >> NOTICE: (1) The foregoing is not intended to be a legally binding or >> legally effective electronic signature. (2) This message may contain >> legally privileged or confidential information. If you are not the >> intended recipient of this message, please so notify me, disregard >> the foregoing message, and delete the message immediately. I >> apologize for any inconvenience this may have caused. >> >> >> >> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ >> <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
